Desa GWP30T, GWP20T, GWN20T, WMN20, GN30T Troubleshooting, Observed Problem Possible Cause, Remedy

Models: GP30 GWN20T GWN30T GWN20 GWP20 WMN20 GN30T GWP30T GP30T GWP20T

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TROUBLESHOOTING

TROUBLESHOOTING

OBSERVED PROBLEM POSSIBLE CAUSEWARNING: Turn off and unplug heater and let cool before servic- ing. Only a qualified service person should service and repair heater.

REMEDY CAUTION: Never use a wire, needle, or similar object to clean ODS/pilot. This can damage ODS/pilot unit.

Note: All troubleshooting items are listed in order of operation.

OBSERVED PROBLEM POSSIBLE CAUSE

REMEDY

When ignitor button is pressed, there is no spark at ODS/pilot

1.Ignitor electrode positioned wrong

2.Ignitor electrode broken

3.Ignitor electrode not con- nected to ignitor cable

4.Ignitor cable pinched or wet

5.Broken ignitor cable

6.Bad piezo ignitor

1.Replace pilot assembly

2.Replace pilot assembly

3.Reconnect ignitor cable

4.Free ignitor cable if pinched by any metal or tubing. Keep ignitor cable dry

5.Replace ignitor cable

6.Replace piezo ignitor

When ignitor button is pressed, there is spark at ODS/pilot but no ignition

1.Gas supply turned off or equip- ment shutoff valve closed

2.Control knob not in PILOT position

3.Control knob not pressed in while in PILOT position

4.Air in gas lines when installed

5.Depleted gas supply (pro- pane/LP gas only)

6.ODS/pilot is clogged

7.Gas regulator setting is not correct

1.Turn on gas supply or open equipment shutoff valve

2.Turn control knob to PILOT position

3.Press in control knob while in PILOT position

4.Continue holding down con- trol knob. Repeat igniting op- eration until air is removed

5.Contact local propane/LP gas company

6.Clean ODS/pilot (see Cleaning and Maintenance, page 19) or replace ODS/pilot assembly

7.Replace gas regulator

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Desa GWP30T, GWP20T, GWN20T, WMN20, GN30T, GP30T, GWN30T Troubleshooting, Observed Problem Possible Cause, Remedy